I have some DTMF recognition problems with Asterisk in combination with ISDN .
I have set up Asterisk 1.8 with a Dialogic Diva V-4PRI/E1/T1 card (using CAPI). Asterisk is configured to answer and interconnection between MSN. Everything is working fine, but when two mobile are connected through Asterisk box, the DTMF digit is not properly working . its resposing for 1 digit DTMF , but more then one digit its recognizing each digit separately. i assumed its duration and minimum gap issue. but i cant understand where it can be modified and what is the best combination of minimmum duration and gap